Non-Compliance
Clean Water Act
CITY OF HELENA WWTP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $20,000 in total penalties since records began.
- Address
-
1708 CUST AVENUE
HELENA, MT 59602
View on map ↗ - County
- LEWIS AND CLARK County
- Inspections
- 3 · last Jan 21, 2026
- Total Penalties
- $20,000 · last Jun 29, 2022
- Registry ID
- 110013403094
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
5
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Monitoring Violations - Frequency of Sampling Violation | Jan 21, 2026 | Mar 31, 2026 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 21, 2026 | Mar 31, 2026 | Resolved |
| cwa | Monitoring Violations - Frequency of Sampling Violation | Apr 10, 2024 | Jul 22, 2024 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 10, 2024 | Jul 22, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 28, 2023 | — | Open |
| cwa | Schedule Event achieved late but reported | Jul 29, 2022 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 15, 2022 | — | Open |
| cwa | Pretreatment - Failure to Develop/Enforce Standards | Sep 13, 2017 | Jun 16, 2022 | Resolved |
| cwa | Pretreatment - Failure to Establish Local Limits | Sep 13, 2017 | Jun 16, 2022 | Resolved |
| cwa | Pretreatment - Failure to Meet Inspection and Sampling Plan for SIUs | Sep 13, 2017 | Jun 16, 2022 | Resolved |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Dec 16, 2015 | Feb 10, 2016 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Dec 16, 2015 | Feb 10, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Oct 1, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Oct 1, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 1, 2014 | — | Open |
| cwa | Schedule Event reported late | Oct 1, 2014 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Dec 10, 2013 | Feb 3, 2014 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Dec 10, 2013 | Feb 3, 2014 | Resolved |
| cwa | Monitoring Violations - Frequency of Sampling Violation | Dec 10, 2013 | Feb 3, 2014 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Dec 8, 2011 | Feb 22, 2012 | Resolved |
| cwa | Monitoring Violations - Analysis not Conducted | Dec 8, 2011 | Feb 22, 2012 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Dec 8, 2011 | Feb 22, 2012 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Dec 8, 2011 | Feb 22, 2012 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Feb 17, 2010 | Apr 1, 2010 | Resolved |
| cwa | Permit Violations - Unapproved Operation | Feb 17, 2010 | Apr 1, 2010 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Feb 17, 2010 | Apr 1, 2010 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 28, 2001 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 1999 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 28, 1998 | Aug 3, 1998 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 28, 1998 | — | Open |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +11% | Feb 2026 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +11% | Feb 2026 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.41 mg/L | 0.11 | +275% | Dec 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.77 mg/L | 0.11 | +600% | Dec 2025 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.11 | +19% | Aug 2025 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +11% | Aug 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.21 mg/L | 0.11 | +95% | Jul 2025 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.34 mg/L | 0.01 | +2,546% | Jul 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +8% | Jul 2025 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.34 mg/L | 0.01 | +3,722% | Jul 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.11 | +29% | Jun 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.11 | +18% | May 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.19 mg/L | 0.11 | +72% | Apr 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.75 mg/L | 0.11 | +585% | Mar 2025 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.27 mg/L | 0.11 | +142% | Mar 2025 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.41 mg/L | 0.11 | +275% | Feb 2025 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.41 mg/L | 0.11 | +275% | Feb 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.61 mg/L | 0.11 | +455% | Jan 2025 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.61 mg/L | 0.11 | +455% | Jan 2025 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.62 mg/L | 0.11 | +462% | Dec 2024 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.33 mg/L | 0.11 | +203% | Dec 2024 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.21 mg/L | 0.11 | +95% | May 2024 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.48 mg/L | 0.11 | +338% | May 2024 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +85% | Apr 2024 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +167% | Apr 2024 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +5% | Jan 2024 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +5% | Jan 2024 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +22% | Dec 2023 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +38% | Oct 2023 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +22% | Sep 2023 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +46% | Sep 2023 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +62% | Oct 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +123% | Sep 2022 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.11 | +1% | Aug 2022 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.11 | +8% | Aug 2022 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.11 | +24% | Jul 2022 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.11 | +24% | Jul 2022 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.11 | +31% | Jun 2022 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.11 | +31% | Jun 2022 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +33% | Jun 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +23% | Jun 2022 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 53.35 kg/d | 49.03 | +9% | Jun 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +38% | Jan 2022 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 59.20 MPN/100mL | 1,260.00 | +99,999% | Jan 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +8% | Nov 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +31% | Sep 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +69% | Jul 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +22% | Jul 2021 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +23% | Jun 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +44% | Apr 2021 | Resolved |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
Administrative - Formal
· Case 08-2021-0211 · Jun 29, 2022
$20,000
Administrative - Formal
· Case 08-2021-0203 · Sep 2, 2021
Administrative - Formal
· Case 08-2009-0123 · Jun 25, 2009
CWA 309A AO For Compliance
Clean Water Act
· Case 08-2002-N004 · Sep 3, 2002
CWA 309A AO For Compliance
Clean Water Act
· Case 08-1991-N003 · Jul 26, 1991
CWA 309G2B AO For Class II Penalties
Clean Water Act
· Case 08-1991-N005 · Jul 26, 1991
CWA 309A AO For Compliance
Clean Water Act
· Case 08-1991-N008 · Nov 9, 1990
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